This entry was posted on September 8, 2021
I was lucky enough to be able to "play" with one of the first SunDancer II H-alpha filters and see what it is capable of. Even though I am not one of the most experienced H-alpha observers, I have been able to observe the sun with the two H-alpha telescopes of the Observatory in Heilbronn/Neckar again and again for more than 20 years. These are a 20/20 H-alpha filter by Wolfgang Lille with 0.8Å on the 150/2250 refractor (which complements a classical prominence filter), and a Lunt LS-60 telescope. I freely admit that I find the concept of the Lunt convincing, especially for public observatories: a complete telescope with which nothing can go wrong. It's foolproof, which is especially important in an club where many...
This entry was posted on September 2, 2020Last modified on April 16, 2021.
The CGX: A Versatile Mount For Everyone!
Recently I was able to work with the Celestron CGX, the Baader Apo 95/560 Travel Companion, the Nikon D810A and the StarAid Revolution as guiding system for the first time. Once again the results proved how much you can get out of a good system if you take some time to tweak the settings a little bit instead of simply working with the factory settings of the software without taking a closer look at them.
To get straight to the point: I'm really excited about what the CGX delivered last night!
For polar alignment, I used the star Regulus and the integrated AllStar Polar Alignment (ASPA) system of the CGX. My alignment routine only consisted of a 2-star alignment, with...
This entry was posted on September 1, 2020
Our customer Jörg Schoppmeyer sent us this unusual picture: a circular Mercury, shortly after the upper conjunction and only 1.8° away from the Sun!
Mercury is traditionally a difficult object to observe. The reason: The small planet is always close to the Sun and can be seen with the naked eye only shortly after sunset or before sunrise when it is at maximum distance from the Sun. Legend has it that even the great astronomer Johannes Kepler never saw Mercury with his own eye - but Kepler did not have a modern telescope with accessories from Baader Planetarium...
On August 18th, 2020, Jörg Schoppmeyer pointed his
BAADER APO 95/580 CaF2 Travel Companion (#2300095, € 3850,-)
at Mercury. Since the small planet was only...
This entry was posted on June 2, 2020
Darkness Became Light! ... A Quantum Leap in 36 x 24mm at 61.1MP?
In recent years, color cameras have become increasingly popular. A reversal of the trend is not to be expected. One reason for this is the ability to capture weak structures in deep-sky objects even with moderate exposure times. Developments in CMOS sensors and recently the BSI sensor technology have played a decisive role in this. In addition, both quantum efficiency (QE) and full-well capacity increased, noise was reduced, pixels became smaller and smaller, and dynamics increased with almost every new sensor generation.
What happens when all these developments see the light of the stars in a new camera like the QHY 600M with a black and white sensor?
I had asked myself...
This entry was posted on May 14, 2020
William "Bill" Paolini has been actively involved in optics and amateur astronomy for more than 50 years, and is author of the popular book: : Choosing and Using Astronomical Eyepieces
We appreciate the positive feedback we have received so far. The Baader MaxBright® II Binocular with case (#2456460, € 425,-) incorporates the knowledge aquired during thirty years of building astronomical binoviewers. It closes the gap between cheaper entry-level binoviewers and our high-end Mark V Giant Bino – see also the article about the differences between MaxBright® II and Mark V Großfeld (Giant) binocular.
A detailed test report: Field Test of the Baader MaxBright® II Binoviewer has now been published by William Paolini in the most popular astro forums. We are very happy about his extremely...
This entry was posted on September 10, 2019Last modified on April 6, 2020.
RASA 8 – The family is complete – First Impressions
Here is a firsthand report by Christoph Kaltseis about his work with the RASA 8 and an ATIK Horizon colour camera.
On the ATT fair I was asked by the company Baader if I'd like to test the newly announced RASA 8" - Rowe-Ackermann Schmidt Astrograph (#822252 € 2.195,-) . I've been using both the RASA 11" - Rowe-Ackermann Schmidt Astrograph (#822250, € 4495,-) and the larger RASA 36cm - Rowe-Ackermann Schmidt Astrograph (#822251) successfully for some time now. So I know the system of the Rowe-Ackermann-Schmidt-Astrographs very well and know the potential of these optics. So I didn't have to think twice before agreeing to a test.
What can be said "Out-of-the-box" about the...
The RASA 8 already proved itself as practical and easy to operate in the first tests. Without annoying mirror shifting I could focus the camera (Fujifilm X-T3) within one minute. Thanks to the very fast f-ratio of the RASA 8, it is even possible to focus on average bright stars in the field of view, without having to point the telescope at a bright star.
No collimation was necessary after unpacking and mounting the instrument (the telescope seems to be very resistant against shocks and temperature changes). The star image in APS-C format is perfect down to the corners of the image. Due to the high light intensity, very short exposure times of less than 30 seconds and low ISO values can be used, as...
Before the sales launch of new high-end telescopes, the first models go to experienced testers who check them for their possibilities and weaknesses. We asked Michael Jäger, one of the most successful comet hunters and photographers, to test the RASA 8" - Rowe-Ackermann Schmidt Astrograph. Such a fast telescope with short focal length and large field of view is perfect especially for sky surveillance.
Together with the telescope, Michael Jäger also received a filter changer which was fitted to the RASA 8: The Baader FCCT (Filter Changer Camera Tilter) lets you use filters as well as collimate filter and camera to the light path of the telescope.
First tests with a 7 nm CCD H-alpha-Filter which he already owned produced images with sharp stars...
This entry was posted on December 18, 2018
On 28 July 2018 around 22:00 UTC we obtained the best image of the planet Saturn so far. It was taken through the 17" Planewave Astrograph of the Rooisand Observatory in Namibia. The imaging camera was a ZWO ASI 290M with 2.9 µm pixel size. The primary focal length of the telescope was extended by a factor of 1.7 with a Baader Q-Turret Barlow lens element, the equivalent focal length was about 5 meters. A total of 3000 single images were taken, of which 10% were stacked. A Baader IR pass filter was used to calm the seeing condition.
After processing the raw sum image, a thin black line appeared in the outer ring area, which seemed to be the Encke Gap in the A-ring....
This entry was posted on March 19, 2018
Hints + tricks for high-resolution lunar and planetary photography with "lucky imaging technique" and a video camera - a short workflow for Schmidt Cassegrain telescopes and Baader Planetarium accessories
Pictures often say more than a thousand words ...
... again and again I am asked how I make my highresolution lunar and planetary shots. Therefore, here is a brief description of the equipment and following a few hints + tricks to the "workflow" for shooting and image processing.
Read here the Hints + Tricks for high-resolution lunar and planetary photography with "lucky imaging technique" and video camera.